Apparatus for heading nails or tacks.



A. H. BRIGHAM. APPARATUS FOR HEADING NAILS 0R TAUKS. APPLIUATION FILED JUNE a, 191s.

1,105,614, Patented Aug.4,1914.

Figi.

v" Y w 13 I3 w lllllrffgw 6 Fig. '28 .27 5)3 34 mk." vmn I 30 al/az/ 29 Wnesses. Inventor. wg, AIbert H.Brgham,'

Aty's.

THE NDRRIS PETERS CO.. PHOTO-LJTHO.. WASHINGTON. D. C.

ALBERT II. BRIGHAM, 0F WHITMAN, MASSACHUSETTS.

APPARATUS FOR HEADING NAIIJS OR TACKS.

- Specification of Letters Patent.

Patented A110'. 4, 1914.

Application lcd June 6, 1913. Serial No. 772,093.

T0 all whom t may concern Be it known that I, ALBERT II. BRIGHAM, a citizen of the United States, residing at Vhitman, county of Plymouth, State of Massachusetts, have invented an Improve- `nent in Apparatus for Heading Nails or "icks, of which the following description,

l connection with the accompanying draw ng, is a specification, like characters on the drawing representing like parts.

My invention relates to apparatus for heading nails tacks or the like and is an improvement over the devices shown in my prior Patents Nos. 589,495, 658,203 and 7 22,669. Said devices include a die carrier, a heading pin secured in the die carrier and a die which is guided by the die carrier and into which the heading pin is slidable. In these devices considerable difficulty has been experienced because the die is not guided with sufficient accuracy in its movement and frequent breakage of the heading pin results. One of the objects of the present invention is to prevent this breakage and to provide a more simple device. This is accomplished by providing a long bearing in the die carrier for the die, the bearing being preferably considerably longer than the diameter of the die and I provide a novel device for holding the heading pin and thrust screw securely in the die carrier, and in my preferred forms obviating the need of a check screw.

Other objects will appear from the following specification and the novel features will be pointed out in the claims.

In the drawing in which my invention is illustrated, Figure 1 is a sectional view showing the heading' `tool in position in the heading lever; Fig. 2 is a View of a portion of the heading tool drawn to an enlarged scale; Fig. 3 is a section on the line 3-3 of F ig. 2; ITiO. 4 is a longitudinal scction showing a modified construction; and Fig. 5 is a similar section showing another' modification. i

Referring to the drawings in detail l in dicates the headinglever in which the heading tool 2 is adjustably mounted. This tool is clamped in position by aset-screw 3 between which and the tool a block l is inserted. A thrust-screw 5 is provided for the purpose of adj usting the tool longitudinally and holding it in adjusted position.` G and 7 represent gripping dies between which the blank is held while the head is being formed. These dies are of usual construction having suitable depressions or seats to shape the under side of the head. The heading tool comprises a `lrmgitiidinally bored die carrier 8, a heading pin 9 secured in the bore of the die carrier bythe holder 10 and a die 1l slidably connected to the die carrie` and in which the heading pin slides.

In accordance with my present invention lthe die carrier is cylindrical and has a long sliding bearing as at 12 in the forward portion of the bore of the die carrier fitting as closely as is consistent with free longitudinal movement.

I shall first describe the structure shown in Figs. 1, 2 and 3. The carrier is longitudinally slotted as shown at 13 preferably from its rear end to a point 14e adjacent the portion in which the die is mounted. 'lhe holder 10 is split longitudinally as shown at 15 and is preferably so positioned in the carrier that the position of its slot will coincide with the position of the slot 13 of the carrier. The heading pin is slidable in the bore of the die and extends through the split holder by which it is securely clamped in position in the carrier. 'lhe set screw 3 when tightened clamps the tool in position in the heading lever and also clamps the adjusting thrust screw 17 at the same time thus obviating the necessity of a check screw. The bore of the die carrier is threaded at 16 to receive the thrust screw 17 which takes the thrust of the heading pin. This foi-1n of holder and die carrier insures accurate centering of the heading pin in the holder and prevents the breakage duc to inaccurate alinement of the die and `heading pin. As a simple method of limiting the movement of the die in the carrier, I provide a screw 18 the end of which projects into a recess 19 of the die. The end oi the screw is preferably made eccentric as shown at 20 making possible a limited adjustment. The locknut 2l is provided to secure the screw in adjusted position. A spring 22 is mounted in the die carrier behind the die to hold it `in forward position. i

Fig. 4 shows a modilied structure in which the die carrier is made in two parts the body portion 23 being threaded at its forward end .to receive the bushing 2l. The die 25 has a long bearing in the bore of the bushing 24- and is provided with an annular radial flange 26 which engages the inner end of the bushing and limits the outward movement of the die. In other respects this modilication is similar to that shown in Figs. l, 2 and 8.

In the modification shown in Fig. 5v thei die carrier 27 is longitudinally bored as in they other modifications but is not split. The holder is omitted. Instead af set screw 28'- is provided whichy bears against the headingv pin 29 and holds it in adjusted posi-tion'. The die 30 is similar to that shown in Figs.- l, 2 and 3- andl its motion is similarly limited by an adjustable screw and lock-nut. A spring 3l bears against the rear end of the die and normally holds it in forward position. A col-lar 32 may be provi-ded to reinforce thev heading pin if desired. A thrust screw 33 is providedl for adjusting the head'- ing pin longitudinally and taking the thrust thereof, a check screw 3l being provided to lock. the said thrust screw in adjusted position.

lnl all the modifications shown, the die eX- tends some little distance beyond the end. of

the die carrier so that it may be ground oil' to provide a new portion as the bore of the die, Wears.

I have illustrated and described the heading" pin as rigidly secured in` the holder. lt is only essential,y however, `that the heading pin should be soy arranged that it can not move too far forward or be accidentally removed fromf the tool.

The operationl of the device will be clear from` the previous description'.

Having described my invent-lion', what I claim' as new and desireto secure by Letters Patent' is l. In= a device of thev class described,` ay die carrier'having a longitudinal bore',` and split longitudinally for a'. portion of its length,l a cylindrical dielongitudinally bored and having a long bearing. in the' borey of the carrier, a heading pin slidable inthe bore of the die and extend-ing longitudinally in the bore of the carrier, an' adjusting thrust screw threaded into the bore of the carrier and abutting against the heading pin',I a longitudinally split holder embracing the heading pin and fitting in the bore of the die carrier and means to clamp the diecarrier, split holder, heading pink and thrust screw together in operative position.

2. In a device of they classi-described, a die carrier having a longitudinali bore and? split longitudinally for a portion of its length, a cylindrical die longitudinally'bored and having a long bearing in the bore'of the carrier,

a heading pin slidable in the bore of the die and extending longitudinally in the bore of the carrier, a longitudinally split holder embracing the heading pin and. fitting in the bore of the die carrier and means to clamp the carrier, holder and heading pin together.

3'. In a device of the kind described, a die Icarrier comprising. a body portion and a bushing secured' in the end of the body porl tion, ya longitudinally bored die slidable in 'the bushing and having a radial Harigei adapted to; engage the inner end of the 'bushing to limit the outward movement of the die and a heading pin` secured i-rr the carrier and slid-able in the" borel of the diet l. ln a` device oit the kind described,y a die carrier comprising a body portion having; a longitudinal bore and split. for portion oil'h its length andi a bushing, removably secured in the endy ofthe body portion,A allongitudfi'- n-ally bored die having a long slid-ing bearing in the bushing and provided with a radial flange adapted tol engage the inner end4 of the bus-hing and limit the relative movement, a` heading pin slid'a'ble in the borey of the die and extending longitudinally in the bore of the carrier, a; split holder embracing the heading pin and fitting in the' split-porltion of the carrier and means toI clamp; the carrier, holder and heading pin together;-

5. In adevice ofthecl'ass described), a die carrier compris-ing a body porti-on having al longitudinal bore and split for a portion of its length, a; bushing removably secured in the' endy of the body ortion ot the die carrier, av longitudinally ored die having a long sliding bearing in thev bushing and provided:

with a radial flange adapted tol engage the inner end of the bushing and limit the rela'-u tive movement, a: heading` pirn slidable in the. in4 the bore of the carrier, av thrust adjalsting iny the bore of the carrier,.a thirust adjusting screw threaded in the'borel ofv the'car'rier and abutting the headingpin, a split. holderr emebracing. the heading pin and fitting" the split portion of the carrier, and clamping means. to clamp theY die carrier alt, its split portion and thus loch the splitholfder, heading pin, and: thrustv screw inoperative position'.

6a.` A heading tool' comprising af. diie rier having a cylindrical bore: in its fonwardl end, a centrally bored cylindrical die bear.- ing in the borey of the diey carrier for the.' greater portion. of its lengthy whereby accu.u rate aflinement of the die' carrier and die during'the movement of the' latter is assured;- means to limit the movement of thef die' in the die carrier, and a heading pinzsecured the die. carrier and .slidable the bore: oit-fthe die.

7'.` A heading tool comprising a die' carrier having a cylindrical bore ing its forward. end, a centrally bored dieslidablefin thebore of the die. carrier and bearing therein for a distance greater than the diameter of the die name to this specification, in the presence of vlvhereby acurate alkinement of thefdb il the two subscribing Witnesses. c ie carrier uring t e movement o t e ie is assured, means to limit the movement of the ALBERT H BRIGHAM' 5 die in the die carrier, and a heading pin Witnesses:

slidabie in the bore of the die. ELIZABETH MORRIS, In testimony whereof, I have signed my NATI-IAN HEARD.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C.

It is hereby certified that in Letters lPatent No. 1,105,614, granted August 1, 1914,

upon the application of Albert H. Brigham, of Vhitulan, l\/Ias. aehusette, for an improvement in Apparatus 'for Heading- Nails or Taeks, an error appears iu the printed specification requiring correction as follows: Page 2, line 104, strike out the words and comma earrier, a thrust adjusting and insert the worde die and @attending Z011 gtudz'nally; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the ease in the Patent Oiee.

Signed and Sealed this 1st day 0f September, A. D., 1914.

R. F. WHITEHEAD,

Acting ommssz'oneq' of Patents.

[SEAL] 

